<template>
  <div class="hello">
    <button class="btn" @click="goto">按钮</button>
    <div class="model" v-show="model" @click="model = false">
      <div class="model-show">
        <img :src="modelSrc" alt="">
      </div>
    </div>
    <p>例子</p>
    <div class="cut">
      <vue-cropper ref="cropper" :img="option.img" :output-size="option.size" :output-type="option.outputType" :info="true" :full="option.full"
        :can-move="option.canMove" :can-move-box="option.canMoveBox" :fixed-box="option.fixedBox" :original="option.original"
        :auto-crop="option.autoCrop" :auto-crop-width="option.autoCropWidth" :auto-crop-height="option.autoCropHeight" :center-box="option.centerBox"
				@real-time="realTime" :high="option.high" ></vue-cropper>
    </div>
    <div class="test-button">
      <button @click="changeImg" class="btn">changeImg</button>
      <label class="btn" for="uploads">upload</label>
      <input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg"
        @change="uploadImg($event, 1)">
      <button @click="startCrop" v-if="!crap" class="btn">start</button>
      <button @click="stopCrop" v-else class="btn">stop</button>
      <button @click="clearCrop" class="btn">clear</button>
      <button @click="refreshCrop" class="btn">refresh</button>
      <button @click="changeScale(1)" class="btn">+</button>
      <button @click="changeScale(-1)" class="btn">-</button>
      <button @click="rotateLeft" class="btn">rotateLeft</button>
      <button @click="rotateRight" class="btn">rotateRight</button>
      <button @click="finish('base64')" class="btn">preview(base64)</button>
      <button @click="finish('blob')" class="btn">preview(blob)</button>
      <a @click="down('base64')" class="btn">download(base64)</a>
      <a @click="down('blob')" class="btn">download(blob)</a>
      <div style="display:block; width: 100%;">
        <label class="c-item">
          <span>上传图片是否显示原始宽高 (针对大图 可以铺满)</span>
          <input type="checkbox" v-model="option.original">
          <span>original: {{ option.original}}</span>
        </label>
        <label class="c-item">
          <span>能否拖动图片</span>
          <input type="checkbox" v-model="option.canMove">
        </label>
        <label class="c-item">
          <span>能否拖动截图框</span>
          <input type="checkbox" v-model="option.canMoveBox">
          <span>canMoveBox: {{ option.canMoveBox}}</span>
        </label>
        <label class="c-item">
          <span>截图框固定大小</span>
          <input type="checkbox" v-model="option.fixedBox">
          <span>fixedBox: {{ option.fixedBox}}</span>
        </label>
        <label class="c-item">
          <span>是否输出原图比例的截图</span>
          <input type="checkbox" v-model="option.full">
          <span>full: {{ option.full}}</span>
        </label>
        <label class="c-item">
          <span>是否自动生成截图框</span>
          <input type="checkbox" v-model="option.autoCrop">
          <span>autoCrop: {{ option.autoCrop}}</span>
        </label>
        <label class="c-item">
          <span>是否根据dpr生成适合屏幕的高清图片</span>
          <input type="checkbox" v-model="option.high">
          <span>high: {{ option.high}}</span>
        </label>
        <label class="c-item">
          <span>截图框是否限制在图片里(只有在自动生成截图框时才能生效)</span>
          <input type="checkbox" v-model="option.centerBox">
          <span>centerBox: {{ option.centerBox}}</span>
        </label>
        <label class="c-item">
          <p>输出图片格式</p>
          <label>jpg
            <input type="radio" name="type" value="jpeg" v-model="option.outputType">
          </label>
          <label>png
            <input type="radio" name="type" value="png" v-model="option.outputType">
          </label>
          <label>webp
            <input type="radio" name="type" value="webp" v-model="option.outputType">
          </label>
        </label>
      </div>
    </div>
    <div class="show-preview" :style="{'width': previews.w + 'px', 'height': previews.h + 'px',  'overflow': 'hidden', 'margin': '5px'}">
      <div :style="previews.div">
        <img :src="previews.url" :style="previews.img">
      </div>
</div>
  </div>
</template>

<script>
export default {
  name: 'HelloWorld',
  props: {
    msg: String
  },
  data () {
    return {
      model: false,
      modelSrc: '',
      crap: false,
      previews: {},
      lists: [
        {
          img: 'http://ofyaji162.bkt.clouddn.com/touxiang.jpg'
        },
        {
          img: 'https://o90cnn3g2.qnssl.com/0C3ABE8D05322EAC3120DDB11F9D1F72.png'
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/bg1.jpg',
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/bg2.jpg',
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/can.jpg'
        },
        {
          img: 'http://ofyaji162.bkt.clouddn.com/nightcat.jpg'
        }
      ],
      option: {
        img: '',
        size: 1,
        full: false,
        outputType: 'png',
        canMove: true,
        fixedBox: true,
        original: false,
        canMoveBox: true,
        autoCrop: true,
        // 只有自动截图开启 宽度高度才生效
        autoCropWidth: 200,
        autoCropHeight: 150,
        centerBox: false,
        high: true
      },
      show: true
    }
  },
  methods: {
    goto() {
      this.$router.push({
        path: '/Test'
      })
    },
    changeImg() {
      this.option.img = this.lists[~~(Math.random() * this.lists.length)].img
    },
    startCrop() {
      // start
      this.crap = true
      this.$refs.cropper.startCrop()
    },
    stopCrop() {
      //  stop
      this.crap = false
      this.$refs.cropper.stopCrop()
    },
    clearCrop() {
      // clear
      this.$refs.cropper.clearCrop()
    },
    refreshCrop() {
      // clear
      this.$refs.cropper.refresh()
    },
    changeScale(num) {
      num = num || 1
      this.$refs.cropper.changeScale(num)
    },
    rotateLeft() {
      this.$refs.cropper.rotateLeft()
    },
    rotateRight() {
      this.$refs.cropper.rotateRight()
    },
    finish(type) {
      // 输出
      // var test = window.open('about:blank')
      // test.document.body.innerHTML = '图片生成中..'
      if (type === 'blob') {
        this.$refs.cropper.getCropBlob((data) => {
          var img = window.URL.createObjectURL(data)
          this.model = true
          this.modelSrc = img
        })
      } else {
        this.$refs.cropper.getCropData((data) => {
          this.model = true
          this.modelSrc = data
        })
      }
    },
    // 实时预览函数
    realTime(data) {
      // console.log(data)
      this.previews = data
    },
    // finish2(type) {
    //   this.$refs.cropper2.getCropData((data) => {
    //     this.model = true
    //     this.modelSrc = data
    //   })
    // },
    // finish3(type) {
    //   this.$refs.cropper3.getCropData((data) => {
    //     this.model = true
    //     this.modelSrc = data
    //   })
    // },
    down(type) {
      // event.preventDefault()
      var aLink = document.createElement('a')
      aLink.download = 'demo'
      // 输出
      if (type === 'blob') {
        this.$refs.cropper.getCropBlob((data) => {
          this.downImg = window.URL.createObjectURL(data)
          aLink.href = window.URL.createObjectURL(data)
          aLink.click()
        })
      } else {
        this.$refs.cropper.getCropData((data) => {
          this.downImg = data
          aLink.href = data
          aLink.click()
        })
      }
    },
    uploadImg(e) {
      //上传图片
      // this.option.img
      var file = e.target.files[0]
      if (!/\.(gif|jpg|jpeg|png|bmp|GIF|JPG|PNG)$/.test(e.target.value)) {
        alert('图片类型必须是.gif,jpeg,jpg,png,bmp中的一种')
        return false
      }
      this.option.img = window.URL.createObjectURL(file)
      console.log(window.URL.createObjectURL(file))
      // var reader = new FileReader()
      // reader.onload = (e) => {
      //   let data
      //   if (typeof e.target.result === 'object') {
      //     // 把Array Buffer转化为blob 如果是base64不需要
      //     data = window.URL.createObjectURL(new Blob([e.target.result]))
      //   } else {
      //     data = e.target.result
      //   }
      //   console.log(data)
      //   if (num === 1) {
      //     this.option.img = data
      //   } else if (num === 2) {
      //     this.example2.img = data
      //   }
      // }
      // // 转化为base64
      // // reader.readAsDataURL(file)
      // // 转化为blob
      // reader.readAsArrayBuffer(file)
    }
    // imgLoad(msg) {
    //   console.log(msg)
    // }
  },
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style lang="scss" scoped>
      .cut {
        width: 500px;
        height: 500px;
        margin: 30px auto;
      }
      .c-item {
        max-width: 800px;
        margin: 10px auto;
        margin-top: 20px;
      }
    
      .content {
        margin: auto;
        max-width: 1200px;
        margin-bottom: 100px;
      }
    
      .test-button {
        display: flex;
        flex-wrap: wrap;
        align-content: center;
        justify-content: center;
      }
    
      .btn {
        display: inline-block;
        line-height: 1;
        white-space: nowrap;
        cursor: pointer;
        background: #fff;
        border: 1px solid #c0ccda;
        color: #1f2d3d;
        text-align: center;
        box-sizing: border-box;
        outline: none;
        margin:20px 10px 0px 0px;
        padding: 9px 15px;
        font-size: 14px;
        border-radius: 4px;
        color: #fff;
        background-color: #50bfff;
        border-color: #50bfff;
        transition: all .2s ease;
        text-decoration: none;
        user-select: none;
      }
    
      .des {
        line-height: 30px;
      }
    
      code.language-html {
        padding: 10px 20px;
        margin: 10px 0px;
        display: block;
        background-color: #333;
        color: #fff;
        overflow-x: auto;
        font-family: Consolas, Monaco, Droid, Sans, Mono, Source, Code, Pro, Menlo, Lucida, Sans, Type, Writer, Ubuntu, Mono;
        border-radius: 5px;
        white-space: pre;
      }
    
      .show-info {
        margin-bottom: 50px;
      }
    
      .show-info h2 {
        line-height: 50px;
      }
    
      /*.title, .title:hover, .title-focus, .title:visited {
        color: black;
      }*/
    
      .title {
        display: block;
        text-decoration: none;
        text-align: center;
        line-height: 1.5;
        margin: 20px 0px;
        background-image: -webkit-linear-gradient(left,#3498db,#f47920 10%,#d71345 20%,#f7acbc 30%,#ffd400 40%,#3498db 50%,#f47920 60%,#d71345 70%,#f7acbc 80%,#ffd400 90%,#3498db);
        color: transparent;
        -webkit-background-clip: text;
        background-size: 200% 100%;
        animation: slide 5s infinite linear;
        font-size: 40px;
      }
    
      .test {
        height: 500px;
      }
    
      .model {
        position: fixed;
        z-index: 10;
        width: 100vw;
        height: 100vh;
        overflow: auto;
        top: 0;
        left: 0;
        background: rgba(0, 0, 0, 0.8);
      }
    
      .model-show {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100vw;
        height: 100vh;
      }
    
      .model img {
        display: block;
        margin: auto;
        max-width: 80%;
        user-select: none;
        background-position: 0px 0px, 10px 10px;
        background-size: 20px 20px;
        background-image: linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee 100%),linear-gradient(45deg, #eee 25%, white 25%, white 75%, #eee 75%, #eee 100%);
      }
    
      .c-item {
        display: block;
        user-select: none;
      }
    
      @keyframes slide {
        0%  {
          background-position: 0 0;
        }
        100% {
          background-position: -100% 0;
        }
      }
</style>

